Hyacinth Macaw invests 46% of her funds in stock I and the balance in stock ] The standard deviation of returns on 1 is 10%, and on Jit is 30% (Use decimals, not percents, in your calculations.) .. Calculate the variance of portfolio returns, assuming the correlation between the returns is 1 (Do not round intermediate calculations. Round your answer to 4 decimal places.) Portfolio variance b. Calculate the variance of portfolio returns, assuming the correlation is 0.6. (Do not round intermediate calculations. Round your answer to 4 decimal places.) Portfolio variance c. Calculate the variance of portfolio returns, assuming the correlation is 0 (Do not round Intermediate calculations. Round your answer to 4 decimal places.)